Lennon and Ono's longtime friend Elliot Mintz writes about their marriage in his new book 'We All Shine On: John, Yoko & Me'

“Yoko is a very stoic woman, but it would have severe consequences,” Mintz continued. At the time, Lennon and Ono had been married for three years since 1969. The pair continued to be married until Lennon’s tragic murder in 1980.

John Lennon and Yoko Ono were obsessed with their weight, according to a new book by their close friend Elliot Mintz. Mintz, 79, was a Los Angeles-based radio and TV presenter who became close to the couple in the early Seventies. He has written a memoir about their time together, We All Shine On: John, Yoko & Me, which hit shelves on October 22.